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authorJason Gunthorpe <jgg@nvidia.com>2022-05-04 16:14:43 -0300
committerAlex Williamson <alex.williamson@redhat.com>2022-05-13 10:14:20 -0600
commita905ad043f32bbb0c35d4325036397f20f30c8a9 (patch)
treed6fd0152cfaec5856b36d73d84f729c02e69d9e2 /tools
parentc38ff5b0c373fbbd6a249eb461ffd4ae0f9dbfa0 (diff)
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vfio: Change vfio_external_check_extension() to vfio_file_enforced_coherent()
Instead of a general extension check change the function into a limited test if the iommu_domain has enforced coherency, which is the only thing kvm needs to query. Make the new op self contained by properly refcounting the container before touching it. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/5-v3-f7729924a7ea+25e33-vfio_kvm_no_group_jgg@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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